Poisson's ratio of BiFeO3 thin films: X-ray reciprocal space mapping under variable uniaxial strain

被引：13
|
作者：
Hu, S. [1 ]
Alsubaie, A. [1 ,2 ]
Wang, Y. [3 ]
Lee, J. H. [4 ]
Kang, K. -R. [5 ]
Yang, C. -H. [4 ,5 ]
Seidel, J. [1 ]
机构：
[1] UNSW Australia, Sch Mat Sci & Engn, Sydney, NSW, Australia
[2] Taif Univ, Sch Phys, At Taif, Saudi Arabia
[3] UNSW Australia, Solid State & Elemental Anal Unit, Mark Wainwright Analyt Ctr, Sydney, NSW, Australia
[4] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 34141, South Korea
[5] Korea Adv Inst Sci & Technol, Inst NanoCentury, Daejeon 34141, South Korea
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2017年 / 214卷 / 01期
基金：
澳大利亚研究理事会; 新加坡国家研究基金会;
关键词：
BiFeO3; elastic properties; mechanical properties; multiferroics; thin films; X-ray diffraction; THERMAL-EXPANSION COEFFICIENT; DOMAIN-WALLS; STRESS;
D O I：
10.1002/pssa.201600356
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the mechanical properties of BiFeO3 (BFO) thin films grown on SrTiO3 (001) substrates that were manually bent using a specially designed uniaxial bending stage. X-ray measurements under variable uniaxial strain show that excessive strains up to approximate to 2% could be applied along the [100] direction with little cross talk between [100] and [010] directions. X-ray reciprocal space maps were acquired to investigate the evolution of -a and c-axis lattice constants under variable strain and Poisson's ratio of BFO thin films v(zx) was determined to be 0.30 +/- 0.01.
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页数：5
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